from business innovation to medical science. cutting edge science turns a piece of skin into a beating heart. come up next. breakthrough changing immediate as we night. you get the story as the news continuesíáf- these sweet honey clustery things have fiber? fiber one. almost tastes like one of jack's cereals. uh, forgot jack's cereal. [ jack ] what's for breakfast? uh, try the number one! i've never heard of that. [ wife ] it's great. it's a sweet honey cereal, you'll love it. yeah, this is pretty good. are you guys alright? yeah. [ male announcer ] over a third of a day's fiber. not that anyone has to know. fiber beyond recognition. fiber one. oechl. >> what if you could stock pile a set of spare parts for your body. an extra part lung or eye grown in a lab from a piece of your own skin? here's bill weir from "nightline"with the nobel prize winning science that could one day save lives. >>reporter: meet sophie. watching the 3-year-old motor around her minnesota home would you never know she was born with half of a functionin